The Mail Merge tab of Print Options refers to the Mail Merge Utility of MedicalDirector Maintenance. With the Mail Merge Utility, you can resume a failed mail merge print run. With the Show Mail Merge Description Box check box ticked (as shown below), you will be prompted to enter a description for each mail merge you perform in Clinical. This description is saved, accessible via the Mail Merge utility, and helps to identify which mail merge you would like to resume.